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Chemical, biological, radiological and nuclear defense specialists with the 31st Marine Expeditionary Unit practice night-time reconnaissance and detection. The Marines donned full protective suits and oxygen tanks to simulate being called to a site with unknown and potentially dangerous substances. Also available in high definition.
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nuclearbiologicalradiologicalCBRNWMDMarinesHigh Definitionchemical31st MEUdefenseexpeditionary
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